It seems to be a mixed bag. Don't know folks there who are developers specifically but I know people who say they really like it (admittedly fairly senior) and I know people who couldn't wait to get out after a rather short period.
Wow lot of complains here. I've had a good experience interviewing with Amazon few months ago. Recuiter was supper supportive and following up constantly. The interview rounds were also relatively nice. The only thing was to prep for all those behavioral questions. Been working there for a few weeks and so far better than what I expected.